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Zirconia is the ringmaster of the Dead Moon Circus. She plans to find Pegasus so the Dead Moon Circus can rule the world, and Queen Nehelenia could be released from her mirror.

She was created from Nehelenia's fears of becoming old and ugly. She has a pet eyeball named Zircon, who takes pictures of their targets for her, and can usually be found on Zirconia's staff.

Zirconia can shoot blue energy waves, shoot spider-like threads, or duplicate herself.


Zirconia can be synthesized for use as a gemstone or imitation diamond.


Zirconia takes on the appearance of an old hag who wears long dark purple robes that cover her entire body, minus her hands and face. A shadow that forms the shape of a scowling face is visible on her cloak, which can project itself into an image of Nehelenia when she wishes to appear. She appears to have lavender skin that is covered in wrinkles, and very rarely ever smiles or shows any emotion. She appears to take on an appearance similar to a preying mantis, with long, thin pincers under her chin. She also wears what appears to be a white horned helmet with a black dot (the symbol for the Dead Moon Circus) in the center. She also holds a very tall white staff which holds her flaming pet eyeball, Zircon, on it.


Zirconia appears to have little enjoyment for life, and seems to only exist to serve Nehelenia (whom she was born from). She appears to be very stern and demanding of her underlings, yelling at them to find Pegasus and reproaching them for their failures. She also appears to have no tolerance for rebellion, as she fought one of the Amazoness Quartet shortly after meeting them.


In the anime, Zirconia used a magic orb to transform a tiger, a hawk, and a fish into the Amazon Trio, and sent them to look into people's dreams to find out whose dream Pegasus was hiding inside. On some occasions, she would tell them who to go after himself, only for them to find that it wasn't the one they were looking for. Eventually, she decided that they were no longer needed and sent the Amazoness Quartet to eliminate them. Though all three of them were killed in the end, Pegasus revived them, gave them dream mirrors, and took them to live in a forest in Elysion.

The Amazoness Quartet took over for the Amazon Trio, though they constantly annoyed Zirconia, disrespected her, and taunted her about her age. Queen Nehelenia was the only thing keeping her from destroying them. She and Zircon were always the ones who told them who to go after. She also found out from Queen Nehelenia that the one they were looking for would have a gold dream mirror.

Eventually, Zirconia used Zircon to extract Sailor Chibi Moon's dream mirror, which was the golden mirror. She imprisoned her in Nehelenia's mirror and imprisoned the Amazoness Quartet inside mirrors when they disobeyed her. She tried to trick the Sailor Senshi with their reflections, but this failed, and the Sailor Senshi fought her. She made several clones of herself, but she was found out by Sailor Mercury (as the real Zirconia had Zircon on her staff), who hit her with Mercury Aqua Rhapsody. She then teleported the Amazoness Quartet to them and drained their power, but was unable to once they smashed their orbs, giving up Nehelenia's power. Zirconia retreated to the mirror room, where Nehelenia, who now possessed the Golden Crystal, walked through the mirror. Zirconia was unable to exist while Nehelenia was not inside her mirror. When Nehelenia walked through the mirror, Zirconia glowed red and disappeared for good.

A Zirconia-like creature did appear from Nehelenia during her final battle with Sailor Moon, however.



  • In the anime, Zirconia is the only major villain of the Dead Moon Circus who was never redeemed, although if one counts her as part of Nehelenia, she technically was redeemed.
  • In the Cloverway dub, her gender was changed to male for unknown reasons.
  • Zirconia is one of the few villains to withstand Sailor Moon’s attack, namely Moon Gorgeous Meditation, albeit this was done protecting the Amazoness Quartet from the attack.